Whatever complaints we level at The Walking Dead, few could argue the artistry of the undead outshining movie zombies year after year. Season 6 served up some particularly gross walkers, from sewers to sandwiched in a quarry, so gird your stomachs for a look at the best from the Season 6 Blu-ray.

Ahead of its August 23 release, a new featurette from The Walking Dead: The Complete Sixth Season goes behind the scenes of the season’s biggest walkers, including the premiere’s skinned quarry lead, Daryl’s mossy woodland friend, and more. Cast and FX guru Greg Nicotero reveal surprising details behind each, while the full Blu-ray and DVD features can be found below: